Happy, scared, sad, angry, embarrassed, surprised.

It is a feeling.

The picture of the surprised expression matches the picture of a child's surprise birthday party. The picture of the scared expression matches the picture of a boy standing in front of a snake The picture of the sad expression matches the picture of the girl whose toys were tidied up by her mom

The boy standing in front of the snake is afraid of the snake therefore his facial expressin shows he is scared. The girl wants to carry on playing with her toys and is sad because her mom packed the toys away therefore she is frowning. The child did not know he was having a party therefore his facial expresion is one of surprise.

Happy is good, Jealous is bad. (Classify the pictures accordingly.)

Yes, people are allowed to feel bad. If something happens that worries them or makes them feel sad or angry then they are allowed to feel those feelings, even if they are bad.

People should try and think of the good instead of the bad. Good emotions should gobble up the bad emotions